Connected: An Internet Encyclopedia
RFC 1042 - Address Mappings

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### Address Mappings

The mapping of 32-bit Internet addresses to 16-bit or 48-bit IEEE 802 addresses must be done via the dynamic discovery procedure of the Address Resolution Protocol (ARP) [2].

Internet addresses are assigned arbitrarily on Internet networks. Each host's implementation must know its own Internet address and respond to Address Resolution requests appropriately. It must also use ARP to translate Internet addresses to IEEE 802 addresses when needed.

Next: The ARP Details

Connected: An Internet Encyclopedia
RFC 1042 - Address Mappings